Chill for car-wheels



(No Mode l.)

P. OONNELLY. V CHILL FOR GAR WHEELS.

No. 427,052. Patented May 6, 1 90.

a/IWM a ,.W I; Q 6mm UNITED STATES PATENT OFFlCE.

PATRICK CONNELLY, OF ROCHESTER, NElV YORK.

CHILL FOR CAR-WH EELS.

SPECIFICATION formingpart of Letters Patent No. 427,052, dated May 6,1890.

Application filed March 5 1890.

To all whom it may concern.-

Be it known that I, PATRICK OoNNELLY, a citizen of the United States,residing at Rochester, in the county of Monroe, in the State of NewYork, have invented certain Improvements in Chills for Cast-IronOar-Wheels, of which, the following is a specification, reference beinghad to the accompanying drawings.

My invention relates to certain improvements in the construction ofchills for castiron car-wheels, which improvements are fully describedandillustrated in the following specification and accompanying drawings,the novel features thereof being specified in the claims annexed to thesaid specificationj My improvements in chills for car-wheels arerepresented in the accompanying drawings, in Which- Figure 1 is apartial plan viewshowinga wheel or the pattern in place in the chill.Fig. 2 is a transverse section of the chill and wheel or pattern. Fig. 3represents one of the radial plates detached in elevation. Fig. 4 is asection of one of the plates on the line 4. 4, Fig. 3. Fig. 5 is asection on the line 5 5, Fig. 3.

In the construction of my improved chill for car-wheels I prepare asuitable number of cast-iron radial plates A, and after arranging themin a circle, as indicated in Fig. 1, I cast an iron ring B around themwhile inclosed in suitable clamps, and subsequently finish the chill ina suitable lathe by turning the inner edges of the plates to the formadapted to give the proper shape to the tread and flange of the wheel.As indicated in Figs. 1 and at, the radial plates are beveled orwedgeshaped, so that they receive support from each other. Any suitablenumber of radial plates may be used in any one chill, according to thethickness of the plates, which may vary from one-quarter to five-eighthsof an inch on their inner edges. In assembling the plates into thecircular form the last plate is driven in firmly by any suitable means,so as to insure actual contact between the sides of all the plates. Nhenassembled in a suitable ring, and while clamped between suitableclamp-plates, the plates are inserted in a suitable mold and the ring Bcast around them. As indicated in Fig. 2, the ring B is preferably of Ushape in section, so as to Serial No. 342,715. (No model.)

hold the plates in place and firmly in contact with each other. Thesides of the plates where the ring is cast upon them may be straight, asindicated at C, Fig. 3, although I prefer to provide them with a recess,such as D, Fig. 3, into which the ring projects. As the ring B contractsafter casting, the plates are pushed against each other with greatforce. After the ring has been cast around the radial plates the chillis finished and made ready for casting car-wheels therein by turning theinner edges of the plates to the form desired for the flange and thetread.

The chill may be made of any desired size, and is used with the cope anddrag in the same way as the ordinary solid chill.

The surfaces of the plates where they bear against each other arepreferably dressed on one side at least and in order to facilitate thisoperation I provide the plates on one side with the projecting surfacesor facingstrips E, which reduce the amount of metal necessary to beground away when the plates are trued up, which is most convenientlyeffected 011 the flat side of an emery-wheel. The depressions F betweenthe raised surfaces also facilitate the escape of the gases formed inpouring the wheel. The plates may, however, be used without thedepressions F.

The outer ends of the radial plates are preferably made of a reduceddepth, so that the sides of the ring B come flush with the upper andlower surfaces of the chill.

By the use of my improved chill cast-iron car-wheels can be cheaply madeperfectly true and entirely free from the ordinarydefectssuchaschill-cracksandsweat-spots-as I have demonstrated bypractical experience extending over a considerable period of time.

I claim- 1. The herein-described chill for cast-iron car-wheels,consisting of a series of wedgeshaped plates arranged in a circle, withtheir radial surfaces in contact, having their inner ends of a formcorresponding with. the tread and flange of the wheel and securedtogether by a ring cast around their outer ends, substantially asdescribed.

2. The combination, with a series of wedge shaped chill-plates A,dressed on one radial surface and arranged in a circle, with theirradial faces in contact, of the ring B, cast around the outer ends ofthe plates, substantially as described.

3. The combination, with a ring of Wedge- 5 shaped radial chill-platesA, having dressed facing-strips on one radial surface, of the ring 1-),cast around the outer ends of the plates, whereby their radial surfacesare held in close contact, substantially as described.

4. The combination, with a ring of Wedgc- I0 shaped radial chill plates,having their outer ends of reduced depth, of the ring B, cast about thereduced ends of the plates, substantially as described.

PATRICK CONNELLY.

Witnesses:

GEO. B. SELDEN, C. G. ORANNELL.

